CN213725703U - Multifunctional circulation tank for ammonia desulfurization ultra-clean discharge process - Google Patents
Multifunctional circulation tank for ammonia desulfurization ultra-clean discharge process Download PDFInfo
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- CN213725703U CN213725703U CN202022146437.XU CN202022146437U CN213725703U CN 213725703 U CN213725703 U CN 213725703U CN 202022146437 U CN202022146437 U CN 202022146437U CN 213725703 U CN213725703 U CN 213725703U
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Abstract
The invention provides a multifunctional circulation tank for an ammonia desulfurization ultra-clean discharge process. The utility model discloses a multi-functional circulating slot has solved the sulfite in the absorption liquid of traditional oxidation tower and has built the sulphuric acid solution that obtains after the change easily and the back mixing of sulfite solution, absorbs, the oxidation influences each other, and ammonia escape is great in the clean flue gas after the desulfurization, and the problem that the sulfite oxidation rate is low adopts gradient absorption at different levels to spray, has stopped the formation of aerosol from the source, realizes the ultra-clean emission steady operation.
Description
Technical Field
The utility model relates to an ammonia desulfurization ultra-clean discharge process multifunctional circulation tank, belonging to the technical field of environmental protection equipment.
Background
The discharge amount of sulfur dioxide in China is huge, the pollution to the atmospheric environment is serious, the discharge amount is the first in the world, the self-purification capacity of the atmospheric environment in China is exceeded, the area with the annual precipitation pH value less than 5.6 occupies about 40% of the area in China, huge economic loss is caused, and the ecological environment and the health of people in China are seriously influenced. S02The emission and the formation of acid rain mainly come from the industries of coal burning, metallurgy, chemical industry and the like. The ammonia desulphurization is a green process for flue gas desulphurization, is a wet desulphurization mode with high efficiency and low energy consumption, has the advantages of gas-liquid phase reaction in the desulphurization process, high reaction rate, high utilization rate of the absorbent and high desulphurization efficiency of more than 99.6 percent.
According to the traditional oxidation tower, the bottom of the tower is provided with an aeration device, an ammonium sulfate solution obtained after oxidation of sub-salt in absorption liquid is easily mixed with the sub-salt solution, and then is circularly sent to a washing absorption tower for spraying and desulfurization, absorption and oxidation influence each other, ammonia escape in purified flue gas after desulfurization is large, and meanwhile, the oxidation rate of the sub-salt is low.
Disclosure of Invention
For solving the not enough of prior art, solve because of the narrow and small unable desulphurization unit problem of arranging in place, the utility model aims at providing a multi-functional circulation groove of ammonia process desulfurization ultra-clean emission technology.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a multifunctional circulation tank for ammonia desulfurization and ultra-clean discharge process comprises a tank body, a cleaning solution conditioning section, an oxidation section, an absorbent regeneration section and a partition plate; the cleaning solution conditioning section is arranged above the inside of the groove body; the oxidation section is arranged in the middle in the groove body; the absorbent regeneration section is arranged below the inside of the tank body; the partition plates are respectively positioned between the cleaning solution conditioning section and the oxidation section and between the oxidation section and the absorbent regeneration section.
Preferably, the washing liquid conditioning section consists of a washing liquid backflow port, a process water interface, a washing circulating pump interface and a washing circulating pump; the washing liquid backflow port is arranged above the left side of the washing liquid tempering section; the process water port is arranged above the right side of the cleaning solution tempering section; the washing circulating pump interface is arranged in the middle of the right side of the washing liquid tempering section; and the washing circulating pump interface is connected with the washing circulating pump.
Preferably, the oxidation section is composed of a first absorption liquid reflux port, an oxidation air interface, a first absorption pump interface and a first absorption pump; the first absorption liquid reflux port is arranged above the left side of the oxidation section; the first absorption pump port is arranged in the middle of the right side of the oxidation section; the first absorption pump interface is connected with a first absorption pump; the oxidation air interface is arranged below the left side of the oxidation section.
Preferably, the absorbent regeneration section is composed of a second absorption liquid reflux port, an ammonia adding port, a second absorption pump port and a second absorption pump; the second absorption liquid reflux port is arranged above the left side of the absorbent regeneration section; the second absorption pump port is arranged in the middle of the right side of the absorbent regeneration section; the second absorption pump interface is connected with a second absorption pump; the ammonia adding port is arranged below the right side of the absorbent regeneration section.
Preferably, a first valve interface is arranged below the right side of the cleaning solution tempering section, and an upper valve interface is arranged above the right side of the oxidation section; a lower valve port is arranged below the right side of the oxidation section, and a second valve port is arranged above the right side of the absorbent regeneration section; a first pipeline is communicated between the first valve port and the upper valve port; a first valve is arranged on the first pipeline; a second pipeline is communicated between the second door interface and the lower valve interface; and a second valve is arranged on the second pipeline.
Preferably, the partition plate is made of carbon steel lining scales or stainless steel or dual-phase steel, the thickness of the partition plate is 2-50mm, and the gradient of the partition plate is 0-15 degrees.
The utility model discloses a multi-functional circulation groove of ammonia process desulfurization ultra-clean emission technology adopts the baffle to keep apart washing liquid quenching and tempering section, oxidation section and absorbent regeneration section, has guaranteed indexes such as the concentration of washing liquid, absorption liquid, oxidation liquid at best operation control within range.
The working principle is as follows: the washing circulating pump extracts the washing liquid from the washing liquid conditioning section of the multifunctional circulating tank, and after the washing circulating pump hits the washing flue gas of the washing and purifying section of the desulfurizing tower, the washing flue gas is collected in a liquid collector of the purifying section and then flows back to the washing liquid conditioning section to form first gradient circulation.
Because the circulation of the cleaning solution needs a certain time and replacement, at the moment, the valve can be opened through the communicating pipeline of the conditioning section and the oxidation section of the cleaning solution, so that the cleaning solution is replenished to the oxidation section, and fresh process water is replenished to the conditioning section of the cleaning solution through the process water replenishing port, thereby ensuring the flue gas cleaning effect.
The absorption pump extracts absorption liquid from the oxidation section of the multifunctional circulation tank, and the absorption liquid is pumped to the absorption section of the desulfurizing tower to absorb SO in the flue gas2After ammonia escapes, the ammonia is collected in a liquid collector at the absorption section and flows back to the oxidation section to form a second gradient circulation.
And the oxidizing air is forcibly blown into an air pipe network at the bottom of the oxidizing section through a pipeline from an inlet to oxidize the ammonium sulfite and the ammonium bisulfite in the solution.
The absorption pump extracts absorption liquid from the regeneration section of the multifunctional circulation tank, and the absorption liquid is pumped to the absorption section of the desulfurizing tower to absorb SO in the flue gas2After the residual acid gas is collected in a liquid collector at the absorption section, the residual acid gas flows back to the regeneration section, and a third gradient circulation is formed. Liquid ammonia or ammonia water is supplemented to the regeneration section through an ammonia adding port through a pipeline.
And the ammonium sulfite in the absorbent regeneration section of the multifunctional circulation tank is pumped into a desulfurization tower to absorb the first section through a circulation pump, absorbs sulfur dioxide in the flue gas, reacts to generate ammonium bisulfite, is converged in a liquid collector, returns to the absorbent regeneration section through a return pipe, and reacts with the added ammonia water/liquid ammonia to generate the absorbent ammonium sulfite.
And pumping part of the ammonium sulfite and the ammonium bisulfite to an oxidation section of the multifunctional circulation tank by a pump, and oxidizing the forced blown air into ammonium sulfate and ammonium bisulfate. And pumping the oxidized ammonium sulfate and ammonium bisulfate to a desulfurizing tower for absorption at a second section by a pump, and absorbing the ammonia gas escaping from the flue gas to avoid the ammonia escaping.
Preferably, the oxidation section and the absorbent regeneration section of the multifunctional circulation tank are separated by a partition plate and are communicated through a pipeline. The low pH value solution in the oxidation section flows into the regeneration section through a communicating pipeline, the pH value and the oxidation rate of the regeneration section are adjusted, and the ammonia escape is avoided.
Preferably, the multifunctional circulation tank, the cleaning solution conditioning section, the oxidation section and the absorbent regeneration section are respectively provided with a reflux port and pumped to the cleaning purification section, the absorption second section and the absorption first section of the desulfurizing tower through a pump to respectively form three independent circulations.
Compared with the prior art, the invention has the beneficial effects that: the utility model discloses a multi-functional circulating groove of ammonia process desulfurization ultra-clean emission technology has solved the sulfite in the absorption liquid of traditional oxidation tower and has built the sulphuric acid solution that obtains after the change easily and the back-mixing of sulfite solution, absorbs, the oxidation influences each other, and ammonia escape is great in the clean flue gas after the desulfurization, and the problem that the sulfite oxidation rate is low adopts gradient absorption at different levels to spray, has stopped the formation of aerosol from the source, realizes that the ultra-clean emission moves steadily.
Drawings
FIG. 1 is a schematic view of a multifunctional circulation tank structure of an ammonia desulfurization ultra-clean discharge process.
Wherein: 1. a trough body; 11. a first conduit; 12. a first valve; 13. a second conduit; 14. A second valve;
2. a cleaning solution tempering section; 21. a washing liquid return port; 22. a process water interface; 23. a washing circulation pump interface; 24. a washing circulating pump; 25. a first valve interface;
3. an oxidation section; 31. a first absorption liquid reflux port; 32. an oxidizing air interface; 33. a first absorption pump interface; 34. a first absorption pump; 35. an upper valve interface; 36. a lower valve port; 37. an air pipe network;
4. an absorbent regeneration section; 41. a second absorption liquid reflux port; 42. an ammonia adding interface; 43. a second absorption pump interface; 44. a second absorption pump; 45. a second valve interface;
5. a separator.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Referring to fig. 1, the utility model provides a multifunctional circulation tank for ammonia desulfurization and ultra-clean discharge process, which comprises a tank body 1, a cleaning solution conditioning section 2, an oxidation section 3, an absorbent regeneration section 4 and a partition plate 5; the cleaning solution conditioning section 2 is arranged above the inside of the tank body 1; the oxidation section 3 is arranged in the middle of the tank body 1; the absorbent regeneration section 4 is arranged below the inside of the tank body 1; the number of the partition plates 5 is 2, and the partition plates are respectively positioned between the cleaning solution conditioning section 2 and the oxidation section 3 and between the oxidation section 3 and the absorbent regeneration section 4.
Preferably, the washing liquid conditioning section 2 comprises a washing liquid return port 21, a process water interface 22, a washing circulating pump interface 23 and a washing circulating pump 24; the washing liquid return opening 21 is arranged above the left side of the washing liquid tempering section 2; the process water interface 22 is arranged above the right side of the cleaning solution tempering section 2; the washing circulating pump interface 23 is arranged in the middle of the right side of the washing liquid tempering section 2; the washing circulation pump interface 23 is connected with a washing circulation pump 24 pipeline.
Preferably, the oxidation section 3 comprises a first absorption liquid return port 31, an oxidation air port 32, a first absorption pump port 33, and a first absorption pump 34; the first absorption liquid return opening 34 is arranged above the left side of the oxidation section 3; the first absorption pump interface 33 is arranged in the middle of the right side of the oxidation section 3; the first absorption ring pump interface 33 is connected with a first absorption pump 34; the oxidation air port 32 is provided below the left side of the oxidation stage 3.
Preferably, the absorbent regeneration section 4 comprises a second absorption liquid reflux port 41, an ammonia adding port 42, a second absorption pump port 43, and a second absorption pump 44; the second absorption liquid return opening 41 is arranged above the left side of the absorbent regeneration section 4; the second absorption pump port 43 is arranged in the middle of the right side of the absorbent regeneration section 4; the second absorption ring pump interface 43 is connected with a second absorption pump 44; the ammoniation joint 42 is provided below the right side of the absorbent regeneration section 4.
Preferably, a first valve connector 25 is arranged below the right side of the cleaning solution tempering section 2, and an upper valve connector 35 is arranged above the right side of the oxidation section 3; a lower valve port 36 is arranged below the right side of the oxidation section 3, and a second valve port 45 is arranged above the right side of the absorbent regeneration section 4; a first pipeline 11 is communicated between the first valve port 25 and the upper valve port 35; a first valve 12 is arranged on the first pipeline 11; a second pipeline 13 is communicated between the lower valve port 36 and the second valve port 45; and a second valve 14 is arranged on the second pipeline 13.
Preferably, the partition plate is made of carbon steel lining scales or stainless steel or dual-phase steel, and the thickness of the partition plate is 2-50 mm. The gradient is 0-15 degrees.
The utility model discloses a multi-functional circulation groove of ammonia process desulfurization ultra-clean emission technology adopts baffle 5 to keep apart separately washing liquid quenching and tempering section 2, oxidation section 3, absorbent regeneration section 4 respectively, has guaranteed indexes such as the concentration of washing liquid, absorption liquid, oxidation liquid in best operation control range. The working principle is as follows: the washing circulating pump 24 extracts the washing liquid from the washing liquid conditioning section 2 of the multifunctional circulating tank, and after the washing liquid is sprayed to the washing and purifying section of the desulfurizing tower to wash flue gas, the washing liquid is collected in a liquid collector of the purifying section and then flows back to the washing liquid conditioning section 2 to form first gradient circulation. Because the circulation of the cleaning solution needs a certain time and replacement, at this moment, the first pipeline 11 of the communication between the cleaning solution conditioning section 2 and the oxidation section 3 can be opened, and the first valve 12 is opened, so that the cleaning solution is replenished to the oxidation section 3, and fresh process water is replenished to the cleaning solution conditioning section 2 through the process water interface 22, thereby ensuring the flue gas cleaning effect.
The first absorption pump 34 extracts absorption liquid from the multifunctional circulation tank oxidation section 3, and the absorption liquid is pumped to the absorption section of the desulfurizing tower to absorb SO in flue gas2After ammonia escapes, the ammonia is collected in a liquid collector at the absorption section and flows back to the oxidation section 3 to form a second gradient circulation. The oxidation air port 32 is forced to blow into the air pipe network 37 at the bottom of the oxidation section 3 through a pipeline from the inlet, and the ammonium sulfite and the ammonium bisulfite in the oxidation solution are oxidized.
The second absorption pump 44 extracts absorption liquid from the multifunctional circulation tank absorbent regeneration section 4, and the absorption liquid is pumped to the desulfurization tower absorption section to absorb SO in the flue gas2After the residual acid gas is collected in a liquid collector at the absorption section, the liquid flows back to the absorbent regeneration section 4, and a third gradient cycle is formed. Liquid ammonia or ammonia is supplemented to the absorbent regeneration section 4 through a pipeline through an ammonia interface 42.
Preferably, in the multifunctional circulation tank, the oxidation section 3 and the absorbent regeneration section 4 are separated by a partition plate 5 and are communicated through a second pipeline 13. The low pH value solution in the oxidation section flows into the regeneration section through a communicating pipeline, the pH value and the oxidation rate of the regeneration section are adjusted, and the ammonia escape is avoided.
Preferably, the multifunctional circulation tank, the cleaning solution conditioning section 2, the oxidation section 3 and the absorbent regeneration section 4 are all provided with a backflow port, and pumped to the cleaning and purification section, the absorption second section and the absorption first section of the desulfurizing tower through pumps to respectively form three independent circulations.
The utility model discloses a multi-functional circulating bath of ammonia process desulfurization ultra-clean emission technology's reaction mainly does:
(NH4)2SO3+SO2+H2O＝2NH4HSO3 (1)
NH4HSO3+NH3＝(NH4)2SO3 (2)
2(NH4)2SO3+O2＝2(NH4)2SO4 (3)
2NH4HSO3+O2＝2NH4HSO4
NH4HSO4+NH3＝(NH4)2SO4 (4)。
the ammonium sulfite in the multifunctional circulation tank absorbent regeneration section 4 is pumped to the desulfurizing tower by the second absorption pump 44 to absorb one section, so as to absorb sulfur dioxide in the flue gas, generate ammonium bisulfite by reaction (reaction equation 1), join in the liquid collector, return to the absorbent regeneration section 4 by the return pipe, and react with the added ammonia water/liquid ammonia to generate the absorbent ammonium sulfite (reaction equation 2).
Part of the ammonium sulfite and the ammonium bisulfite is pumped to the oxidation section 3 of the multifunctional circulating tank through a first absorption pump 34, and the forced blown air is oxidized into ammonium sulfate and ammonium bisulfate (reaction equation 3). And pumping the oxidized ammonium sulfate and ammonium bisulfate to a desulfurizing tower for absorption at the second section by a pump, and absorbing the ammonia gas escaping from the flue gas to avoid the ammonia escaping (a reaction equation 4).
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (7)
1. The utility model provides a multi-functional circulation groove of ammonia process desulfurization ultra-clean emission technology which characterized in that: the multifunctional circulation tank for the ammonia desulfurization ultra-clean discharge process comprises a tank body (1), a cleaning solution conditioning section (2), an oxidation section (3), an absorbent regeneration section (4) and a partition plate (5); the cleaning solution conditioning section (2) is arranged above the inside of the tank body (1); the oxidation section (3) is arranged in the middle of the inside of the tank body (1); the absorbent regeneration section (4) is arranged below the inside of the tank body (1); the partition plates (5) are respectively positioned between the washing liquid conditioning section (2) and the oxidation section (3) and between the oxidation section (3) and the absorbent regeneration section (4).
2. The multifunctional circulation tank for the ammonia desulfurization ultra-clean discharge process as claimed in claim 1, wherein: the cleaning solution conditioning section (2) is composed of a cleaning solution return opening (21), a process water interface (22), a cleaning circulating pump interface (23) and a cleaning circulating pump (24); the washing liquid return opening (21) is arranged above the left side of the washing liquid tempering section (2); the process water interface (22) is arranged above the right side of the cleaning solution conditioning section (2); the washing circulating pump interface (23) is arranged in the middle of the right side of the washing liquid conditioning section (2); the washing circulating pump interface (23) is connected with the washing circulating pump (24).
3. The multifunctional circulation tank for the ammonia desulfurization ultra-clean discharge process as claimed in claim 1, wherein: the oxidation section (3) is composed of a first absorption liquid return port (31), an oxidation air interface (32), a first absorption pump interface (33), a first absorption pump (34) and an air pipe network (37); the first absorption liquid return opening (31) is arranged above the left side of the oxidation section (3); the first absorption pump interface (33) is arranged in the middle of the right side of the oxidation section (3); the first absorption pump interface (33) is connected with a first absorption pump (34); the oxidation air interface (32) is arranged below the left side of the oxidation section (3); the air pipe network (37) is connected with the oxidation air interface (32).
4. The multifunctional circulation tank for the ammonia desulfurization ultra-clean discharge process as claimed in claim 1, wherein: the absorbent regeneration section (4) comprises a second absorption liquid return port (41), an ammonia adding port (42), a second absorption pump port (43) and a second absorption pump (44); the second absorption liquid return opening (41) is arranged above the left side of the absorbent regeneration section (4); the second absorption pump interface (43) is arranged in the middle of the right side of the absorbent regeneration section (4); the second absorption pump interface (43) is connected with a second absorption pump (44); the ammonia adding interface (42) is arranged below the right side of the absorbent regeneration section (4).
5. The multifunctional circulation tank for the ammonia desulfurization ultra-clean discharge process as claimed in claim 1, wherein: a first valve connector (25) is arranged below the right side of the cleaning solution tempering section (2) and an upper valve connector (35) is arranged above the right side of the oxidation section (3); a first pipeline (11) is communicated between the first valve port (25) and the upper valve port (35); and a first valve (12) is arranged on the first pipeline (11).
6. The multifunctional circulation tank for the ammonia desulfurization ultra-clean discharge process as claimed in claim 1, wherein: a lower valve interface (36) is arranged below the right side of the oxidation section (3) and a second valve interface (45) is arranged above the right side of the absorbent regeneration section (4); a second pipeline (13) is communicated between the lower valve port (36) and the second valve port (45); and a second valve (14) is arranged on the second pipeline (13).
7. The multifunctional circulation tank for the ammonia desulfurization ultra-clean discharge process as claimed in claim 1, wherein: the partition plate (5) is made of carbon steel lining scales or stainless steel and dual-phase steel, and the thickness is 2-50 mm; the gradient is 0-15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022146437.XU CN213725703U (en) | 2020-09-27 | 2020-09-27 | Multifunctional circulation tank for ammonia desulfurization ultra-clean discharge process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022146437.XU CN213725703U (en) | 2020-09-27 | 2020-09-27 | Multifunctional circulation tank for ammonia desulfurization ultra-clean discharge process |
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| CN213725703U true CN213725703U (en) | 2021-07-20 |
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| CN202022146437.XU Active CN213725703U (en) | 2020-09-27 | 2020-09-27 | Multifunctional circulation tank for ammonia desulfurization ultra-clean discharge process |
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2020
- 2020-09-27 CN CN202022146437.XU patent/CN213725703U/en active Active
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Address after: 224051 environmental protection Avenue innovation center, environmental protection science and Technology City, Tinghu District, Yancheng City, Jiangsu Province Patentee after: Jiangsu Kunlun Internet Technology Co.,Ltd. Address before: 224051 environmental protection Avenue innovation center, environmental protection science and Technology City, Tinghu District, Yancheng City, Jiangsu Province Patentee before: Kunyue Internet Environmental Technology (Jiangsu) Co.,Ltd. |
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